3" exhaust built - pics here

[JShadzi at aol.com]

Yes, ceramic coatings are fine, generally, though only coating the outside on the 10v creates worse cracking IME.  That manifold doesn't like to hold a lot of heat, honestly, with that 10v exh manifold, I'd just get it planed flat and run as-is, its a "piece of shit" all around, and if you can keep it from cracking to bits, that's about as much performance you can expecxt out of it.

Javad

>Hmmm
>
>That is odd, I think you and Jim are probably bang on with the assumption
>of the formation of hard molecules in the iron, leading to microcracking
>by the sounds of it.
>
>so opening up a whole new can of worms.....
>
>Ceramic coatings seem like a better alternative all round then? Any
>experience with them?
>
>I am out of time for now so will be removing the wrap and putting
>everything back togeather over the next 2 weeks (working audi for
>Christmas present with any luck) as driving the Miata in the snow is fun
>but a bit deadly really.
>
>Cheers
>
>Timmy
>
>
>> The DP flange is cast as well, and exhibits the same exact destruction, I
>> had a downpipe completely disintegrate on me that I had wrapped, really
>> odd, even the cat was full of pieces of it, it had just began flaking and
>> crystalizing, very odd.
>>
>> Javad
>>
>>>Morning Javad
>>>
>>>Well....Bummer....and it looks so pretty, and the theory is great, but it
>>>seems like the general concensus points to my removing the wrap   :.(
>>>
>>>So I will be getting out the snips this weekend.
>>>
>>>So here's another question for yall then;
>>>
>>>the downpipe - is the O2 sensor housing cast iron or cast stainless? I
>>>thought it was cast stainless as there doesnt seem to be any real
>>>corrosion at the joint to the stainless downpipe as I would have expected
>>>from welding stainless to cast iron.
>>>
>>>Timmy
>>>
>>>
>>>
>>>> I absolutely agree with Jim, that exh. manifold will disintegrate into
>>>> powder
>>>> in about 8 months with that wrap on it, BTDT.
>>>>
>>>> Javad
>>>>
>>>> In a message dated 12/9/2003 3:34:42 PM Pacific Standard Time,
>>>> jeg1976 at yahoo.com writes:
>>>> Looks good!  I hate getting and giving news like this,
>>>> but.....  You might want to take the wrap off that EM.
>>>> I can't even describe how fast cast iron will
>>>> disintegrate from that stuff.  This goes for the cast
>>>> iron part of the DP as well.  You can wrap everything
>>>> back from there because it's stainless though.  If you
>>>> plan on taking the EM off in a year for a header
>>>> upgrade or something, than I'd just leave it on:)
>>>>
>>>> HTH,
>>>>
>>>
>>>
>>
>
>